Weird blisters on toes??

Last Sunday I notice this fluid filled blister on the top of my big toe right where the middle joint is.  It's about the size of a dried pea.  It isn't a friction blister because I've only had flip flops on.  I did wear a pair of sandles this past week and it rubbed the blister which caused some bleeding, now it's just red and looks like it's drying up.  BUT Friday I noticed one just above that one, right below the nail, and another one on the middle toe in the same spot.  They still look the same and fluid filled.  I think one is beginning on the top of my foot just below where the toe joints stop.  They itch if irritated and when I take a shower or bath.

Any ideas of what this might be?  I haven't gotten bitten by anything. I'm allergic to poison ivy/oak so it would be far worse by now if it was that.  I'm baffled.

Thanks Carol. I did switch from Prevacid to Protonix two weeks ago. I'll see if I can find anything on that.....hadn't even thought about meds. Take care of yourself!

Thank you fredsmom. I have mild Raynaud's....at least I think it's mild because my hands don't turn colors as much as the pictures I have seen on the internet. I am flairing though so maybe there is a connection. I'm going to call my rheumy and see if he wants to look at them.

Thanks again!